Cooperative communication is establishing itself as a viable means of performance enhancement for wireless networks. It provides diversity by emulating multi-input and multi-output (MIMO) system for… (More)

Crowd density estimation is important in crowd analysis and texture analysis is an efficient method to estimate crowd density, this paper proposes an improved estimation approach based on texture… (More)

This paper presents a fast, accurate and novel approach for the problem of flow segmentation in dense and very dense moving crowds. First, optical flow method is used to remove background noise of… (More)

Now video surveillance systems are being widely used, the capability of extracting moving objects and estimating moving object density from video sequences is indispensable for these systems. This… (More)

As a new transmission technique, cooperative diversity means that multiple terminals share their resources to form a virtual antenna array so that the space diversity can be realized. In this paper,… (More)

This paper focuses on crowd motion analysis and consists two parts. Firstly, we propose a new foreground detection approach called optical flow and background model (OFBM) based on Lucas-Kanade… (More)